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Virtual instrument platform and the global positioning system for real-time

Mat Amin, Zulkarnaini and Wan Mohd. Akib, Wan Abdul Aziz and Setan, Halim and Nordin, Zuhaidah (2007) Virtual instrument platform and the global positioning system for real-time. In: Joint International Symposium and Exhibition on Geoinformation and International Symposium and Exhibition on Gps/Gnss 2007, 5-7 November 2007, Persada Johor INternational Convention Centre,Johor Bahru, Johor.

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Abstract

The increasing episodes of disasters associated with large engineering structures such as bridges and high rise buildings require the need for continuous monitoring survey. Methods which are often used for such survey, are acceleration integration method, laser distance gauge method and total station method. The acceleration integration method integrates the acceleration, which is measured by acceleration gauge, to obtain the displacement. But its error is relatively large. With the development of Global Positioning System (GPS), the sampling frequency of GPS receiver can reach about 20 times per second, while the location precision can approach 5~10 mm. Now, with the development of GPS technology, deformation monitoring can be done using Real Time Kinematic (RTK-GPS) at any time and weather in real-time. With sophisticated GPS receivers, the deformations of the various structures can be monitored in real-time mode with 3D positioning precision to 5-10cm + 1 ppm in only 5-10 minutes by using this technique. It makes survey works become easier, faster, very effective and more impressive for monitoring purpose. Although RTK-GPS can capture real time 3D coordinates, but it cannot be displayed in real time. Therefore any movement cannot be analyzed in real time. Hence, an interfacing between computer and GPS receiver are needed to solve this problem. In this paper, an interfacing program was developed using Laboratory Virtual Instrument Engineering Workbench (LABVIEW) software. The software uses a graphical programming language to create a program in a flowchart form. The field trials were carried out using Trimble 4800 GPS receivers in real-time mode. The outcomes of this research are beneficial to many parties such as building and bridge managers.

Item Type:Conference or Workshop Item (Poster)
Uncontrolled Keywords:virtual instrument, RTK-GPS , real-time monitoring
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Geoinformation Science And Engineering (Formerly known)
ID Code:4654
Deposited By: En. Tajul Ariffin Musa
Deposited On:13 Dec 2007 03:51
Last Modified:10 Apr 2012 03:36

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